Tunawife drove Catywampus Saturday. I was thrilled. She was not. It had been seven years for her in automatics, and she picked it back up just fine.
Tunawife drove Catywampus Saturday. I was thrilled. She was not. It had been seven years for her in automatics, and she picked it back up just fine.
Oil change!
No crush washer on the plug explain the 1 qt loss during this interval. No big deal. I'll replace next time.
Update on fuel economy.
According to Waze GPS, my speedometer is underreporting by almost 8%. Therefore, my real no-highway last tank was just under 31 mpg. That's not bad!
Minor-ist update of all.
I was driving back from work sometime late last week, when for no reason, the only thing which doesn't work on the car (the dash clock) suddenly lit up! I basked in it's 80's green digits for the remainder of the ride. And now it's off again. Boo.
Those clocks fail. I think I have a spare, let me check my boxes.
It went on again, and then back off again.
So I have my first real failure in this ancient car after continuous daily driving for months.
Cruising down a 35 mph road I thought to myself, "Boy, this car coasts really well, I haven't had to hit the throttle in a really long time".
And then I went "oh. I bet this isn't actually a good thing" - and sure enough, idle was at 3K. This is a big hit with fellow drivers at red lights. My lawn mower battery got a workout restarting, trying to trick the thing into idling normally. I get home, pop the hood, bam, idle at 1K. Too much to do so I went inside.
This morning it's the same song. I start it, idle at 1K, drive 10 feet, idle at 3K. I can't actually get it to fail while I am under the hood, and the idle returns to normal after 20-30 seconds, but sometimes jumps back up again after that much time again.
IAC? I really have no idea. There doesn't appear to be a vacuum issue, and the throttle cable/cam/spring all seem to be working fine.
Throttle cable/plate would be the first place I'd look. Get it to replicate, jump out and see if it'll return to normal idle if you apply some hand pressure to close the throttle.
Otherwise I'd start blocking off the idle air control, then the fast idle valve (if it has one).
what you're dealing with doesnt sound quite like the infamous 'honda idle' but you may check that your coolant level is full, i think some of the cause of 'honda idle' was air in the cooling system. Also maybe the intake gasket is slowly failing causing an on-off vacuum leak? and like you said IAC would be something to check
Run_Away wrote: Throttle cable/plate would be the first place I'd look. Get it to replicate, jump out and see if it'll return to normal idle if you apply some hand pressure to close the throttle. Otherwise I'd start blocking off the idle air control, then the fast idle valve (if it has one).
The IAC seems to bolt to the other side of the throttle body, so opposite the throttle cam. I suspect it can override the throttle input from the cable.
When I hand operate the throttle, it reacts exactly as expected and does not hang.
Also of note, the ROM at idle can increase. Meaning, I can be sitting in traffic at a light at 1K RPM, and have the throttle open and the RPM climb to 3K without any input from the pedal, so I don't believe anything is sticking.
I think the valve on the front of the intake that has coolant lines going through it is the culprit here. Check your water level first, then try unplugging the iacv and seeing what happens.
Derick Freese wrote: I think the valve on the front of the intake that has coolant lines going through it is the culprit here. Check your water level first, then try unplugging the iacv and seeing what happens.
Yes I agree. This is the exact issue:
http://www.3geez.com/forum/efi-tech/80483-weird-high-idle-when-wheels-moving.html
So it's either the IAC or whatever is telling the IAC to move. Any idea as to which?
The IAC valve is stupid expensive. Unplugging it makes it run really rough and low. I'll bet I can leave it unplugged and up the idle to compensate.
Unplugging the IAC and adjusting the idle up to compensate gets rid of the issue, and gains me a CEL.
Try removing and cleaning both valves. That sometimes works. I drove mine with an unplugged IACV and an adjusted idle for a long time. CELs don't bother me if I know that they aren't serious issues.
It actually drives way smoother with the IAC disconnected
No surprise. Before mine failed, it stumbled all the time. Once I set the idle and unplugged the iacv, it idled perfect all the time and never stumbled.
In reply to Derick Freese:
I never noticed anything bad before, honestly, it just sounded and ran fine.
After disconnecting the IAC and adjusting the idle, it sounded normal again. THen I went for a drive. Smoother idle, crisper throttle response, clean deceleration when I close the throttle. Other than a tiny stumble on startup, and a 1/4 second longer cranking, it's better in every single way. I'll build a block off plate and plug it back in to avoid the CEL.
Why not just install a Weber 32/36? 
tuna55 wrote: After disconnecting the IAC and adjusting the idle, it sounded normal again. THen I went for a drive. Smoother idle, crisper throttle response, clean deceleration when I close the throttle. Other than a tiny stumble on startup, and a 1/4 second longer cranking, it's better in every single way. I'll build a block off plate and plug it back in to avoid the CEL.
Awesome - wrenches turning in the new garage!!!
In reply to volvoclearinghouse:
Because it's fuel injected already.
Derick Freese wrote: In reply to volvoclearinghouse: Because it's fuel injected already.
He knows, he just always has to have a "useful" comment like that. Always. So does my six year old. 
Fwiw, I want to find another carbed 5 speed and put a Weber 38/38 on it.
My little hatchback thinks it's a pickup truck
You can take the seat backs out or fold them down. Brilliant design.
tuna55 wrote:Derick Freese wrote: In reply to volvoclearinghouse: Because it's fuel injected already.He knows, he just always has to have a "useful" comment like that. Always. So does my six year old.
Someone's got to keep you on your toes. Besides, it goes both ways. 
volvoclearinghouse wrote:tuna55 wrote:Someone's got to keep you on your toes. Besides, it goes both ways.Derick Freese wrote: In reply to volvoclearinghouse: Because it's fuel injected already.He knows, he just always has to have a "useful" comment like that. Always. So does my six year old.
I literally used you as an example yesterday with said 6 year old, as a lesson on how not to be annoying.
In reply to tuna55:
That's funny, my wife uses you as an example on how not to be like Brian.
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